/*
 * Copyright 2002-2017 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.integration.file.locking;

import static org.hamcrest.CoreMatchers.instanceOf;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;

import java.io.File;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;

import org.springframework.beans.DirectFieldAccessor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.integration.endpoint.SourcePollingChannelAdapter;
import org.springframework.integration.file.FileReadingMessageSource;
import org.springframework.integration.file.filters.CompositeFileListFilter;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

/**
 * @author Iwein Fuld
 * @author Gunnar Hillert
 */
@ContextConfiguration
@RunWith(SpringJUnit4ClassRunner.class)
public class FileLockingNamespaceTests {

	@Autowired
	@Qualifier("nioLockingAdapter.adapter")
	SourcePollingChannelAdapter nioAdapter;

	FileReadingMessageSource nioLockingSource;

	@Autowired
	@Qualifier("customLockingAdapter.adapter")
	SourcePollingChannelAdapter customAdapter;

	FileReadingMessageSource customLockingSource;

	@Before
	public void extractSources() {
		nioLockingSource = (FileReadingMessageSource) new DirectFieldAccessor(nioAdapter).getPropertyValue("source");
		customLockingSource = (FileReadingMessageSource) new DirectFieldAccessor(customAdapter).getPropertyValue("source");
	}

	@Test
	public void shouldLoadConfig() {
		//verify Spring can load the configuration
	}

	@Test
	public void shouldSetCustomLockerProperly() {
		assertThat(extractFromScanner("locker", customLockingSource), is(instanceOf(StubLocker.class)));
		assertThat(extractFromScanner("filter", customLockingSource), is(instanceOf(CompositeFileListFilter.class)));
	}

	private Object extractFromScanner(String propertyName, FileReadingMessageSource source) {
		return new DirectFieldAccessor(new DirectFieldAccessor(source).getPropertyValue("scanner")).getPropertyValue(propertyName);
	}

	@Test
	public void shouldSetNioLockerProperly() {
		assertThat(extractFromScanner("locker", nioLockingSource), is(instanceOf(NioFileLocker.class)));
		assertThat(extractFromScanner("filter", nioLockingSource), is(instanceOf(CompositeFileListFilter.class)));
	}

	public static class StubLocker extends AbstractFileLockerFilter {

		public boolean lock(File fileToLock) {
			return true;
		}

		public boolean isLockable(File file) {
			return true;
		}

		public void unlock(File fileToUnlock) {
			//
		}
	}
}